Wiredrawing Machines, Accumulation-Type

Drawing machines in which each block runs at a speed a little higher than would be necessary to supply exactly the amount of wire called for by the succeeding block, thus the amount of wire to be further drawn each block slowly accumulates. On AC-driven machines, the drafting can be arranged so that the elongation between drafts is slightly greater than the speed difference between blocks. Each block is, in fact, a separate machine drawing wire through a die and coiling it up. By means of the waffle arm, wire can be picked up from the running block and transferred to its succeeding block, where it is drawn and coiled through the next die in the series, and so on until the final block is reached. A wide varia­tion of die reductions can be used on these machines without the need for complicated and ex­pensive gear automatically controlling the speed through each die to line up exactly with the elongation of the wire passing through it.